Improved screw-press



@timidi 5m JONATHAN S. BUELL, BUFFALO, AND WILLARD B. 'BUELLOF POMPEY,NEW YORK.

Letters Patent No. 84,408, flctcdNocembfr 24, 1868.

IMPROVED SCREW-PRESS.

The Schedule referred to in these Letters vPatent and making part of thesame.

To all wlwm it may concern:

Be it known that we, J QNATHAN S. BUELL, of Bufh cation.

The natureof our invention consistsl First, in operating thepressure-screw of a cider,

hay, or other press, by means of a ratchet-wheel and ratchet-lever,attached to said screw, in combination with a driving-crank and pitman,so that the continuous circular motion of the crank will impart a vibrartory motion to the lever, and an intermittent rotary motion to thescrew, thereby causing said screw to perform its function of moving thefollower of such. press or presses.

Second, in supporting the overhanging end ofthe ratchet-lever by meansof a diagonal brace, connecting tothe tail of the press-screw by ajournLl-beaiing, which will not interfere with the free revolution ofthe screw, so thatthe screw may work up and down through its nut,without the brace coming in conflict therewith.

Third, in a special construction of the spring-pawl, by which theengagement of the ratchet-lever and ratchetwheel is eiiected.

In the accompanying drawings- Figure I is a side elevation of a press,with our impnovements applied thereto;

l Figure H is a plan or" same;

Figure III is a plan of ratchet-lever, ratchet-wheel, and spring-pawl,on an .enlarged scale; and

Figure IV is a longitudinal section of same.

Like letters refer to like parts in each of the figures.

.A A represent the side posts, and B B', lthe bottom and top cross-headsof a press-frame, of common construction, the side posts beinglongitudinally grooved,l to receive the follower C, and guide the samein its upand-down-movement.

D represents the press-screw, passing through a nut connected to theupper cross-head B, the lower end of said screw bearing upon the centreof the follower, or upon an iron step attached thereto, and so connectedthat, while turning freely, it may move the follower either up or down.1

E represents the ratchet-wheel, which is irmly keyed to the head of thescrew, just above the follower', and

F is the ratchet-lever, hinged upon the screw-head, just below theratchet-wheel.

-In the present instance this lever is made partly. of iron, and partlyof wood, the wooden portion, F, being inserted .in a socket, F2, formedat the end of the iron portion. This construction is adopted as beinglighter;

r and less costly than an all iron one.

Gr is the ratchet-pawl, placed upon the upper side of the lever F, andengaging with the teeth of the ratchet-wheel.

The joint-bolt or pin upon which the pawl works is shown at gl. lhe pawlis made double, that is to say, it has two points, g'2 and g3,equidistant from a line passing through the centre of the ratchet andsaid joint-pin, either of which points may be made to engage the teethof the ratchet-wheel.

The location of the joint-pin, with reference to the points g2 and g3,is such that lines tangent to the ratchetwheel at the said points willpass inside of said jointpin, so that the secure hold of either of saidpoints,

' when engaged withthe ratchet-teeth, is insured.

The pawl' has an arm, h, extending. on the opposite side ofthe joint-pinfrom the points .g2 and g3, the end of which arm has a triangular point,h.

A spring-pin, fi, with a triangular point, is inserted in a socket;caston the upper side ofthe ratchet-lever, as shown at i', said pinbeing in line with the joint-'pin q and the centre of the ratchet-wheel,so that, when one side `of its triangular point is in contact with theopposite side of the triangular point of the pawl-arm It, it will throwone of the pawl-points into engagement with the ratchet-teeth, and whenthe other side of its triangular point is in contact with the OPPOSteangular side of the pawl-arm, it will throw the other pawl-pointintoengagement with the ratchetft'eeth.'

A vibratory motion being imparted to the ratchetlever, it will becommunicated to the-screw by the engagement of the pawl with theratchet-wheel, and the direction in which the screw will turn maybegoverned at pleasure by the use of one or the other of the pawlpoints.

When the triangular points of both pawl-arm and Vnot be imparted to -thescrew;

A handle, J, is projected om the pawl, by which the pawl may be readilyset in either of its three positions.

K representsthe crank-shaft, to which the motivepower, either hand,steam, horse, or other power, is applied.

. It is supported in proper journal-bearings in standards K', andparallel with the ratchet-lever, when the same is at the middle of itsVibration.

L represents the pitman, connecting, the crank L with the end of theratchet-lever, so that the revolution of the crank will communicate avibratgry motion to said lever.

This pitman should be of sufficient length to prevent its action beingmaterially affected, by reason of the ratchet-lever moving up and downwith the screw.

The diagonal brace M leads from the end of the ratchet-lever to the topof the press-screw, and connects therewith by a journal-bearing, whichallows it to vibrate freely while it sustains its weight,

In presses employing two or more screws, a ratchet wheel, pawl, andlever should be provided for each screw, When, by the use of aconnecting-rod between the ends of said levers, they may be operated,-and motion imparted to all the screws simultaneously.

Our invention Will greatly'. facilitate the operation of screw-pressesof all kinds, and lessen the 1abor\ re= quired. It is speciallyapplicable to cider and W1nemills, and will meet a long-felt want forsuch purposes. Having thus described our invention,

What We claim, and desire to secure by Letters Pa ent, isfl. VTheratchet-wheel, lever, pitrnan, and crank, in combination with thepress-screw, When arranged and

